This has been going on for about a week. And I have reported this via Quicken.
It worked - this time. But I am still getting random requests for PayPal security codes when Quicken updates. PayPal thinks it's scammers which I feel is part of it since I had my PayPal account hacked before. But it does also occur every time I do a Quicken update. This has been going on since PayPal split with the crypto section.
if you have the chance, you could save a backup by going to File > Copy or Backup File... in the upper menu at the top of the screen and then create a 'test' data file by going to the same menu and selecting New Quicken File... Next, choose New Quicken File in the screen that follows, and then click OK. After this, choose a file location on your computer and then click Save. Choose Don't use mobile and web when prompted.
You may then add your Paypal-associated accounts by navigating to the Add Account button in the upper left-hand side of the screen, denoted by the '+' symbol. Let us know if you see the same security authorization requests occurring in the test data file once this is attempted.
I look forward to hearing about your results.